Tiers go by win rate, discounted for small samples: the top 15% are S, the next 25% A. Season 2 starts when Season 1 ends: Deadlock Season 2.
Over the last 30 days of Season 1 the top hero is Graves, winning 57.4% of 1,932,938 games across all ranks. S tier: Graves, Rat King, Paige, Seven, Victor, Kelvin and Haze.
Low elo (Obscurus to Acolyte): Graves (55.1%), Rat King (54.9%) and Paige (54.7%). High elo (Phantom to Eternus): Baba (54.5%), Wraith (53.7%) and Ivy (53.7%).
Until Season 1 ends, yes, it updates with each day's games. After the end it covers the season's last 30 days and stays as it is.
| S | 53.9%76,788 games | 76,788 |
| S | 53.7%86,874 games | 86,874 |
| S | 53.2%125,420 games | 125,420 |
| A | 53.0%70,442 games | 70,442 |
| A | 52.8%48,249 games | 48,249 |
| A | 51.8%62,261 games | 62,261 |
| A | 51.8%48,257 games | 48,257 |
| A | 51.5%86,670 games | 86,670 |
| A | 51.3%83,217 games | 83,217 |
| A | 51.4%60,190 games | 60,190 |
| A | 50.6%86,172 games | 86,172 |
| A | 50.1%72,450 games | 72,450 |
| A | 50.0%65,140 games | 65,140 |
| A | 49.8%92,060 games | 92,060 |
| B | 49.7%75,697 games | 75,697 |
| B | 49.9%32,957 games | 32,957 |
| B | 49.9%26,888 games | 26,888 |
| B | 49.7%57,540 games | 57,540 |
| B | 48.7%63,053 games | 63,053 |
| B | 48.5%116,893 games | 116,893 |
| B | 48.2%103,616 games | 103,616 |
| B | 48.0%32,547 games | 32,547 |
| B | 47.8%41,746 games | 41,746 |
| B | 47.6%54,256 games | 54,256 |
| B | 47.2%45,552 games | 45,552 |
| B | 47.1%56,684 games | 56,684 |
| B | 46.9%70,982 games | 70,982 |
| B | 46.6%86,215 games | 86,215 |
| B | 46.3%20,014 games | 20,014 |
| C | 45.9%71,629 games | 71,629 |
| C | 46.0%32,317 games | 32,317 |
| C | 45.9%33,563 games | 33,563 |
| C | 46.0%24,665 games | 24,665 |
| C | 45.7%80,088 games | 80,088 |
| C | 45.6%49,502 games | 49,502 |
| C | 45.6%27,047 games | 27,047 |
| C | 45.4%36,481 games | 36,481 |
| C | 45.2%63,986 games | 63,986 |
| C | 45.2%59,897 games | 59,897 |
| C | 42.3%20,069 games | 20,069 |